42430531 has 16 divisors (see below), whose sum is σ = 51071328. Its totient is φ = 34732800.

The previous prime is 42430517. The next prime is 42430543. The reversal of 42430531 is 13503424.

It is a cyclic number.

It is not a de Polignac number, because 42430531 - 2⁹ = 42430019 is a prime.

It is a super-2 number, since 2×42430531² = 3600699921883922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42430511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (3191958).

Almost surely, 2^42430531 is an apocalyptic number.

42430531 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42430531 is a deficient number, since it is larger than the sum of its proper divisors (8640797).

42430531 is a wasteful number, since it uses less digits than its factorization.

42430531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 42430531 is about 6513.8721970883. The cubic root of 42430531 is about 348.7863570392.

Adding to 42430531 its reverse (13503424), we get a palindrome (55933955).

The spelling of 42430531 in words is "forty-two million, four hundred thirty thousand, five hundred thirty-one".